Français
First: raw rubber system
1) rubber and plastic is also a very common means, and with high styrene, PVC/NBR alloy effect can also increase the hardness.
2) change the way the rubber grade, can also improve the hardness (less used)
2) change the way the rubber grade, can also improve the hardness (less used)
Second: Vulcanization promotion system
1) by increasing the vulcanizing agent to increase the density of cross-chaining, improve the hardness, such as increasing the amount of sulfur used to increase substantially
In the production of recycled rubber products, other materials remain unchanged, add the corresponding amount of sulfur can be increased to a certain extent to improve the hardness of rubber products. (100 copies of rubber, sulfur dosage of up to 4 ~ 5)
2) Add resin. In the manufacture of recycled rubber products at the same time the resin added to it can increase the hardness of rubber products.
3) Part of the product is vulcanized twice to increase the degree of cross-linking and improve the hardness.
In the production of recycled rubber products, other materials remain unchanged, add the corresponding amount of sulfur can be increased to a certain extent to improve the hardness of rubber products. (100 copies of rubber, sulfur dosage of up to 4 ~ 5)
2) Add resin. In the manufacture of recycled rubber products at the same time the resin added to it can increase the hardness of rubber products.
3) Part of the product is vulcanized twice to increase the degree of cross-linking and improve the hardness.
Third: reinforcement filling system
1) Add carbon black. Carbon black can be used as a filler in rubber compound to change the hardness of rubber products.
2) Carbon black varieties change, under the premise of the rubber content rate remains unchanged, the hardness can also be increased significantly.
3) Adding rubber powder, the hardness becomes higher, the effect is also very good, but also only suitable for molded products oh.
2) Carbon black varieties change, under the premise of the rubber content rate remains unchanged, the hardness can also be increased significantly.
3) Adding rubber powder, the hardness becomes higher, the effect is also very good, but also only suitable for molded products oh.
Fourth: plasticizing softening system
Reduce the amount of rubber oil. Rubber oil plays a softening effect, in adding rubber products in the thermal expansion, reduce the interaction force between the polymer. Reducing the amount of rubber oil is equivalent to reducing the softening effect of the rubber products, and play a role in improving the hardness.
